BSOD if EnableULPS set to 1 on Maximus V Formula with HD7950 CrossFireX setup

3 posts · originally from https://geek.digit.in/community/threads/bsod-if-enableulps-set-to-1-on-maximus-v-formula-with-hd7950-crossfirex-setup.168760/

Hi Guys,
Need your inputs please. If EnableULPS is set to 1 in registry while using HD7950 crossfire setup on Maximus V Formula, I get BSOD and my OS hangs at start. So I need to set it to 0 to use the system. This does not affect power usage much as the second card takes only 15 watts in idle but I was curious why would it happen on this motherboard. The same components with same driver versions run perfectly with EnableULPS set to 1 on Maximus V Gene motherboard.
Regards,
Mandar

I heard the opposite story.

But, as I saw with my watt-meter, there is almost no difference in consumption of power after enabling/disabling it.
Generally, with ULPS enabled, the second card will turn off completely, when it's not being used.
I'm really clueless about your problem. Disabling power saving feature can cause problem at startup, but after enabling it.
Wired.

^^ Ye.. weird. I have opened a case with AMD. I don't think they would be entertaining it anyway.
In future I'll need to keep in mind to set enableULPS to 0 manually whenever I install new amd drivers.